It's been nearly four years since Evanescence finished touring in support of their 'The Open Door' album, but now they are officially back with a roaring new single 'What You Want'.

'What You Want' is being serviced to radio on August 22nd, with a release date of October 3rd 2011. Recorded in Nashville's Blackbird Studios, and produced by Nick Raskulinecz (Foo Fighters, Rush, Deftones), frontwoman Amy Lee describes the song as being "really different" from anything in the band's back catalogue.

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'What You Want' is most definitely a departure, the guitars buzz like a hornet's nest, the drums are pounding and primal, and the strings (arranged by Beck's father, David Campbell) swell and stab.

Throw in a positively massive chorus and Lee's beautiful melodies, profound lyrics, and poignant piano, and you've got a song that's powerful enough to shake the world to its very foundation.

"It's about freedom - that's definitely a constant theme on the record", Lee says. "And the chorus - 'remember who you really are' - that's exactly everything you could assume it means."

Evanescence have also been focused on finishing the track listing for their album, due October 10th and finalising the routing for their world tour. The band announced UK dates last week which include two nights at London's Hammersmith Apollo on Nov 4th and 5th.